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Annotation of GNUtools/emacs/src/m-isi-ov.h, revision 1.1

1.1     ! root        1: /* m- file for ISI 68000's
        !             2:    Copyright (C) 1985, 1986 Free Software Foundation, Inc.
        !             3: 
        !             4: This file is part of GNU Emacs.
        !             5: 
        !             6: GNU Emacs is free software; you can redistribute it and/or modify
        !             7: it under the terms of the GNU General Public License as published by
        !             8: the Free Software Foundation; either version 1, or (at your option)
        !             9: any later version.
        !            10: 
        !            11: GNU Emacs is distributed in the hope that it will be useful,
        !            12: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14: GNU General Public License for more details.
        !            15: 
        !            16: You should have received a copy of the GNU General Public License
        !            17: along with GNU Emacs; see the file COPYING.  If not, write to
        !            18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            19: 
        !            20: 
        !            21: #define ISI68K
        !            22: 
        !            23: /* The following three symbols give information on
        !            24:  the size of various data types.  */
        !            25: 
        !            26: #define SHORTBITS 16           /* Number of bits in a short */
        !            27: 
        !            28: #define INTBITS 32             /* Number of bits in an int */
        !            29: 
        !            30: #define LONGBITS 32            /* Number of bits in a long */
        !            31: 
        !            32: /* 68000 has lowest-numbered byte as most significant */
        !            33: 
        !            34: #define BIG_ENDIAN
        !            35: 
        !            36: /* Define how to take a char and sign-extend into an int.
        !            37:    On machines where char is signed, this is a no-op.  */
        !            38: 
        !            39: #define SIGN_EXTEND_CHAR(c) (c)
        !            40: 
        !            41: /* Say this machine is a 68000 */
        !            42: 
        !            43: #define m68000
        !            44: 
        !            45: /* Use type int rather than a union, to represent Lisp_Object */
        !            46: 
        !            47: #define NO_UNION_TYPE
        !            48: 
        !            49: /* XINT must explicitly sign-extend */
        !            50: 
        !            51: #define EXPLICIT_SIGN_EXTEND
        !            52: 
        !            53: /* Data type of load average, as read out of kmem.  */
        !            54: 
        !            55: #ifdef BSD4_3
        !            56: #define LOAD_AVE_TYPE long
        !            57: #else
        !            58: #define LOAD_AVE_TYPE double
        !            59: #endif BSD4_3
        !            60: 
        !            61: /* Convert that into an integer that is 100 for a load average of 1.0  */
        !            62: 
        !            63: #ifdef BSD4_3
        !            64: #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
        !            65: #else
        !            66: #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
        !            67: #endif
        !            68: 
        !            69: /* Mask for address bits within a memory segment */
        !            70: 
        !            71: #define SEGMENT_MASK 0x1ffff
        !            72: 
        !            73: /* use the -20 switch to get the 68020 code */
        !            74: /* #define C_SWITCH_MACHINE -20 */
        !            75: 
        !            76: /* Use the version of the library for the 68020
        !            77:    because the standard library requires some special hacks in crt0
        !            78:    which the GNU crt0 does not have.  */
        !            79: 
        !            80: #define LIB_STANDARD -lmc
        !            81: 
        !            82: /* macros to make unexec work right */
        !            83: 
        !            84: #define A_TEXT_OFFSET(HDR) sizeof(HDR)
        !            85: #define A_TEXT_SEEK(HDR) sizeof(HDR)
        !            86: 
        !            87: /* A few changes for the newer systems.  */
        !            88: 
        !            89: #ifdef BSD4_3
        !            90: #define HAVE_ALLOCA
        !            91: /* The following line affects crt0.c.  */
        !            92: #undef m68k
        !            93: 
        !            94: #undef LIB_STANDARD
        !            95: #define LIB_STANDARD -lmc -lc
        !            96: #define C_DEBUG_SWITCH -20 -O -X23
        !            97: #endif

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